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EDIT :: cache-compat.php

<?php /** * Object Cache API functions missing from 3rd party object caches. * * @link https://developer.wordpress.org/reference/classes/wp_object_cache/ * * @package WordPress * @subpackage Cache */ if ( ! function_exists( 'wp_cache_add_multiple' ) ) : /** * Adds multiple values to the cache in one call, if the cache keys don't already exist. * * Compat function to mimic wp_cache_add_multiple(). * * @ignore * @since 6.0.0 * * @see wp_cache_add_multiple() * * @param array $data Array of keys and values to be added. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param int $expire Optional. When to expire the cache contents, in seconds. * Default 0 (no expiration). * @return bool[] Array of return values, grouped by key. Each value is either * true on success, or false if cache key and group already exist. */ function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) { $values = array(); foreach ( $data as $key => $value ) { $values[ $key ] = wp_cache_add( $key, $value, $group, $expire ); } return $values; } endif; if ( ! function_exists( 'wp_cache_set_multiple' ) ) : /** * Sets multiple values to the cache in one call. * * Differs from wp_cache_add_multiple() in that it will always write data. * * Compat function to mimic wp_cache_set_multiple(). * * @ignore * @since 6.0.0 * * @see wp_cache_set_multiple() * * @param array $data Array of keys and values to be set. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param int $expire Optional. When to expire the cache contents, in seconds. * Default 0 (no expiration). * @return bool[] Array of return values, grouped by key. Each value is either * true on success, or false on failure. */ function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) { $values = array(); foreach ( $data as $key => $value ) { $values[ $key ] = wp_cache_set( $key, $value, $group, $expire ); } return $values; } endif; if ( ! function_exists( 'wp_cache_get_multiple' ) ) : /** * Retrieves multiple values from the cache in one call. * * Compat function to mimic wp_cache_get_multiple(). * * @ignore * @since 5.5.0 * * @see wp_cache_get_multiple() * * @param array $keys Array of keys under which the cache contents are stored. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @param bool $force Optional. Whether to force an update of the local cache * from the persistent cache. Default false. * @return array Array of return values, grouped by key. Each value is either * the cache contents on success, or false on failure. */ function wp_cache_get_multiple( $keys, $group = '', $force = false ) { $values = array(); foreach ( $keys as $key ) { $values[ $key ] = wp_cache_get( $key, $group, $force ); } return $values; } endif; if ( ! function_exists( 'wp_cache_delete_multiple' ) ) : /** * Deletes multiple values from the cache in one call. * * Compat function to mimic wp_cache_delete_multiple(). * * @ignore * @since 6.0.0 * * @see wp_cache_delete_multiple() * * @param array $keys Array of keys under which the cache to deleted. * @param string $group Optional. Where the cache contents are grouped. Default empty. * @return bool[] Array of return values, grouped by key. Each value is either * true on success, or false if the contents were not deleted. */ function wp_cache_delete_multiple( array $keys, $group = '' ) { $values = array(); foreach ( $keys as $key ) { $values[ $key ] = wp_cache_delete( $key, $group ); } return $values; } endif; if ( ! function_exists( 'wp_cache_flush_runtime' ) ) : /** * Removes all cache items from the in-memory runtime cache. * * Compat function to mimic wp_cache_flush_runtime(). * * @ignore * @since 6.0.0 * * @see wp_cache_flush_runtime() * * @return bool True on success, false on failure. */ function wp_cache_flush_runtime() { if ( ! wp_cache_supports( 'flush_runtime' ) ) { _doing_it_wrong( __FUNCTION__, __( 'Your object cache implementation does not support flushing the in-memory runtime cache.' ), '6.1.0' ); return false; } return wp_cache_flush(); } endif; if ( ! function_exists( 'wp_cache_flush_group' ) ) : /** * Removes all cache items in a group, if the object cache implementation supports it. * * Before calling this function, always check for group flushing support using the * `wp_cache_supports( 'flush_group' )` function. * * @since 6.1.0 * * @see WP_Object_Cache::flush_group() * @global WP_Object_Cache $wp_object_cache Object cache global instance. * * @param string $group Name of group to remove from cache. * @return bool True if group was flushed, false otherwise. */ function wp_cache_flush_group( $group ) { global $wp_object_cache; if ( ! wp_cache_supports( 'flush_group' ) ) { _doing_it_wrong( __FUNCTION__, __( 'Your object cache implementation does not support flushing individual groups.' ), '6.1.0' ); return false; } return $wp_object_cache->flush_group( $group ); } endif; if ( ! function_exists( 'wp_cache_supports' ) ) : /** * Determines whether the object cache implementation supports a particular feature. * * @since 6.1.0 * * @param string $feature Name of the feature to check for. Possible values include: * 'add_multiple', 'set_multiple', 'get_multiple', 'delete_multiple', * 'flush_runtime', 'flush_group'. * @return bool True if the feature is supported, false otherwise. */ function wp_cache_supports( $feature ) { return false; } endif;

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